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Graphics::ColorDeficiency
Color Deficiency Simulation

Graphics::ColorDeficiency - Color Deficiency Simulation


NAME

Graphics::ColorDeficiency - Color Deficiency Simulation


SYNOPSIS


  use Graphics::ColorDeficiency;

  my $col = Graphics::ColorDeficiency->newRGB(0.5, 0.7, 1);

  my $col2 = $col->asProtanopia;

  print $col2->asHex;


DESCRIPTION

This module allows easy transformation of colors for color deficiency simulation. All the known and theorhetical color deficiencies are represented here, with the exception of 4-cone vision (tetrachromatism).

Each of the transformation methods returns a Graphics::ColorObject object, with the internal color values set. This can then be used to return the color in many different formats (see the Graphics::ColorObject manpage).


METHODS

asProtanopia()
asDeutanopia()
asTritanopia()
The three dichromat methods return a Graphics::ColorObject object, simulated for the three dichromatic vision modes.

asProtanomaly( $amount )
asDeuteranomaly( $amount )
asTritanomaly( $amount )
The three anomalous trichromat methods return a Graphics::ColorObject object, simulated for the three anomalous trichromatic vision modes. The optional $amount agrument allows you to specify the severity of anomaly, ranging from 0 (trichromatic) to 1 (dichromatic). If not specified, it defaults to 0.5.

asTypicalMonochrome()
Returns a Graphics::ColorObject object in Typical Monochromatic (Rod Monochromat) mode.

asAtypicalMonochrome( $amount )
Returns a Graphics::ColorObject object in Atypical Monochromatic (Cone Monochromat) mode. The amount specified in $amount can vary between 1 (trichromatic) and 0 (monochromatic). The default is 0.2 (four fifths gray).

Clone()
Clones the current object, returning a Graphics::ColorDeficiency object with the same color values as the current object.

asMix( $color, $amount )
Returns a new Graphics::ColorDeficiency, consisting of the current color values, mixed with the values of the $color object. $amount specifies the amount of the new color to mix in, from 0 (which is equal to $self.Clone()), up to 1 (which is equal to $color.Clone()). The mix is a linear RGB interpolation.

This method is used internally.


AUTHOR

Copyright (C) 2003 Cal Henderson <cal@iamcal.com>


SEE ALSO

the Graphics::ColorObject manpage

http://www.iamcal.com/toys/colors/

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